9979449443 has 2 divisors, whose sum is σ = 9979449444. Its totient is φ = 9979449442.

The previous prime is 9979449427. The next prime is 9979449509. The reversal of 9979449443 is 3449449799.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3449449799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9979449443 - 2⁴ = 9979449427 is a prime.

It is a super-2 number, since 2×9979449443² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9979479443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4989724721 + 4989724722.

It is an arithmetic number, because the mean of its divisors is an integer number (4989724722).

Almost surely, 2^9979449443 is an apocalyptic number.

9979449443 is a deficient number, since it is larger than the sum of its proper divisors (1).

9979449443 is an equidigital number, since it uses as much as digits as its factorization.

9979449443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35271936, while the sum is 62.

The square root of 9979449443 is about 99897.1943700122. The cubic root of 9979449443 is about 2152.9578501433.

The spelling of 9979449443 in words is "nine billion, nine hundred seventy-nine million, four hundred forty-nine thousand, four hundred forty-three".